/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 87111
 * Date: 2025-10-31
 * Time: 19:49
 */
public class Demo4 {
    public static void main(String[] args) throws InterruptedException {
        Object locker1 = new Object();
        Object locker2 = new Object();
        Object locker3 = new Object();

        Thread t1 = new Thread(() -> {
            try {
                for (int i = 0; i < 10; i++) {
                    synchronized(locker1) {
                        locker1.wait();
                    }
                    System.out.print("A");
                    synchronized(locker2) {
                        locker2.notify();
                    }
                }
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        });
        Thread t2 = new Thread(() -> {
            try {
                for (int i = 0; i < 10; i++) {
                    synchronized(locker2) {
                        locker2.wait();
                    }
                    System.out.print("B");
                    synchronized(locker3) {
                        locker3.notify();
                    }
                }
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        });
        Thread t3 = new Thread(() -> {
            try {
                for (int i = 0; i < 10; i++) {
                    synchronized(locker3) {
                        locker3.wait();
                    }
                    System.out.println("C");
                    synchronized(locker1) {
                        locker1.notify();
                    }
                }
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        });
        t1.start();
        t2.start();
        t3.start();
        //确保上面线程都执行到wait()方法处
        Thread.sleep(1000);
        synchronized(locker1) {
            locker1.notify();
        }
    }
}